Do you want the account to be mapped based on the sign (+,-) of the data, or just want to map the account by the sum of all of the amounts that are mapped by LIKE rule?

If you want to map the account by sum of all amounts, then simply use NA in the Operator column of Logic Account; this way amount for all the source accounts satisfying LIKE criteria would add up to the Logic Account and you can then map this LA to desired target account.